mirror of
https://github.com/Kitware/CMake.git
synced 2025-12-31 10:50:16 -06:00
bdca8b01d2
#pragma once is a widely supported compiler pragma, even though it is not part of the C++ standard. Many of the issues keeping #pragma once from being standardized (distributed filesystems, build farms, hard links, etc.) do not apply to CMake - it is easy to build CMake on a single machine. CMake also does not install any header files which can be consumed by other projects (though cmCPluginAPI.h has been deliberately omitted from this conversion in case anyone is still using it.) Finally, #pragma once has been required to build CMake since at least August 2017 (7f29bbe6enabled server mode unconditionally, which had been using #pragma once since September 2016 (b13d3e0d)). The fact that we now require C++11 filters out old compilers, and it is unlikely that there is a compiler which supports C++11 but does not support #pragma once.
45 lines
1.5 KiB
C++
45 lines
1.5 KiB
C++
/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
|
|
file Copyright.txt or https://cmake.org/licensing for details. */
|
|
#pragma once
|
|
|
|
#include "cmConfigure.h" // IWYU pragma: keep
|
|
|
|
#include <string>
|
|
|
|
/** \class cmWorkingDirectory
|
|
* \brief An RAII class to manipulate the working directory.
|
|
*
|
|
* The current working directory is set to the location given to the
|
|
* constructor. The working directory can be changed again as needed
|
|
* by calling SetDirectory(). When the object is destroyed, the destructor
|
|
* will restore the working directory to what it was when the object was
|
|
* created, regardless of any calls to SetDirectory() in the meantime.
|
|
*/
|
|
class cmWorkingDirectory
|
|
{
|
|
public:
|
|
cmWorkingDirectory(std::string const& newdir);
|
|
~cmWorkingDirectory();
|
|
|
|
cmWorkingDirectory(const cmWorkingDirectory&) = delete;
|
|
cmWorkingDirectory& operator=(const cmWorkingDirectory&) = delete;
|
|
|
|
bool SetDirectory(std::string const& newdir);
|
|
void Pop();
|
|
bool Failed() const { return ResultCode != 0; }
|
|
|
|
/** \return 0 if the last attempt to set the working directory was
|
|
* successful. If it failed, the value returned will be the
|
|
* \c errno value associated with the failure. A description
|
|
* of the error code can be obtained by passing the result
|
|
* to \c std::strerror().
|
|
*/
|
|
int GetLastResult() const { return ResultCode; }
|
|
|
|
std::string const& GetOldDirectory() const { return this->OldDir; }
|
|
|
|
private:
|
|
std::string OldDir;
|
|
int ResultCode;
|
|
};
|